鼠标经过图标时 显示蒙层的效果，就像win7 桌面那个图标，鼠标经过图标时的变化，用js怎么写
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发布时间：2022-04-24 15:00
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时间：2022-04-24 16:29
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
</head>
<style type="text/css">
body {background-image:url(http://www.jhsyh.com/line/img/20101210131221154.jpg)}
#bk {background-color:gray;opacity:0; width:144px;height:144px; float:left;}
#icon {position:relative; left:-136px;top:8px}
</style>
<body>
<div id="bk"></div>
<img src="http://d.lanrentuku.com/down/png/1202/red_hearts/red_hearts_09.png" id="icon">
</img>
</body>
<script type="text/javascript">
var bk=document.getElementById("bk");
var icon=document.getElementById("icon");
icon.onmouseover=function(){
bk.style.opacity=0.5;
}
icon.onmouseout=function(){
bk.style.opacity=0;
}
</script>
</html>
